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irodriguez@lpsfrisco.net: host aspmx.l.google.com[74.125.142.26] said: 550-5.7.1 The user or domain that you are sending to (or from) has a policy that 550-5.7.1 prohibited the mail that you sent. Please contact your domain 550-5.7.1 administrator for further details. For more information, please visit 550 5.7.1 https://support.google.com/a/answer/172179 z6si7862463plk.100 - gsmtp (in reply to end of DATA command)